diff options
Diffstat (limited to 'ext/mysqlnd')
| -rw-r--r-- | ext/mysqlnd/config9.m4 | 31 | ||||
| -rw-r--r-- | ext/mysqlnd/mysqlnd_ps_codec.c | 53 |
2 files changed, 5 insertions, 79 deletions
diff --git a/ext/mysqlnd/config9.m4 b/ext/mysqlnd/config9.m4 index e665cd0a8b..09aca5af8a 100644 --- a/ext/mysqlnd/config9.m4 +++ b/ext/mysqlnd/config9.m4 @@ -61,34 +61,3 @@ if test "$PHP_MYSQLND" != "no" || test "$PHP_MYSQLND_ENABLED" = "yes" || test "$ #endif ]) fi - -dnl -dnl Check if the compiler supports Decimal32/64/128 types from the IEEE-754 2008 version -dnl References: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1657.pdf -dnl http://speleotrove.com/decimal/ -dnl -AC_CACHE_CHECK([whether whether compiler supports Decimal32/64/128 types], ac_cv_decimal_fp_supported,[ -AC_TRY_RUN( [ -#include <stdio.h> -#include <string.h> - -int main(int argc, char **argv) { - typedef float dec32 __attribute__((mode(SD))); - dec32 k = 99.49f; - double d2 = (double)k; - const char *check_str = "99.49"; - char print_str[32]; - - snprintf(print_str, 32, "%f", d2); - return memcmp(print_str, check_str, 5); -} -],[ - ac_cv_decimal_fp_supported=yes -],[ - ac_cv_decimal_fp_supported=no -],[ - ac_cv_decimal_fp_supported=no -])]) -if test "$ac_cv_decimal_fp_supported" = "yes"; then - AC_DEFINE(HAVE_DECIMAL_FP_SUPPORT, 1, [Define if the compiler supports Decimal32/64/128 types.]) -fi diff --git a/ext/mysqlnd/mysqlnd_ps_codec.c b/ext/mysqlnd/mysqlnd_ps_codec.c index 7d0ca02968..e718b4bad8 100644 --- a/ext/mysqlnd/mysqlnd_ps_codec.c +++ b/ext/mysqlnd/mysqlnd_ps_codec.c @@ -24,6 +24,7 @@ #include "mysqlnd_wireprotocol.h" #include "mysqlnd_priv.h" #include "mysqlnd_debug.h" +#include "ext/standard/float_to_double.h" #define MYSQLND_SILENT @@ -181,56 +182,12 @@ ps_fetch_float(zval * zv, const MYSQLND_FIELD * const field, unsigned int pack_l (*row)+= 4; DBG_INF_FMT("value=%f", fval); - /* - * The following is needed to correctly support 4-byte floats. - * Otherwise, a value of 9.99 in a FLOAT column comes out of mysqli - * as 9.9998998641968. - * - * For GCC, we use the built-in decimal support to "up-convert" a - * 4-byte float to a 8-byte double. - * When that is not available, we fall back to converting the float - * to a string and then converting the string to a double. This mimics - * what MySQL does. - */ -#ifdef HAVE_DECIMAL_FP_SUPPORT - { - typedef float dec32 __attribute__((mode(SD))); - /* volatile so the compiler will not optimize away the conversion */ - volatile dec32 d32val = fval; - - /* The following cast is guaranteed to do the right thing */ - dval = (double) d32val; - } -#elif defined(PHP_WIN32) - { - /* float datatype on Winows is already 4 byte but has a precision of 7 digits */ - char num_buf[2048]; - (void)_gcvt_s(num_buf, 2048, fval, field->decimals >= 31 ? 7 : field->decimals); - dval = zend_strtod(num_buf, NULL); - } -#else - { - char num_buf[2048]; /* Over allocated */ - char *s; - -#ifndef FLT_DIG -# define FLT_DIG 6 -#endif - /* Convert to string. Ignoring localization, etc. - * Following MySQL's rules. If precision is undefined (NOT_FIXED_DEC i.e. 31) - * or larger than 31, the value is limited to 6 (FLT_DIG). - */ - s = php_gcvt(fval, - field->decimals >= 31 ? FLT_DIG : field->decimals, - '.', - 'e', - num_buf); - - /* And now convert back to double */ - dval = zend_strtod(s, NULL); - } +#ifndef NOT_FIXED_DEC +# define NOT_FIXED_DEC 31 #endif + dval = float_to_double(fval, (field->decimals >= NOT_FIXED_DEC) ? -1 : field->decimals); + ZVAL_DOUBLE(zv, dval); DBG_VOID_RETURN; } |